Which factor do 64x^2+48x+9 and 64x^2 - 9 have in common?

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Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Ms.ortiz sells tomatoes wholesale. the function p(x)=-80x^2+320x-10, graphed below, indicates how much profit she makes on a load of tomatoes if she makes on a load of tomatoes if she sells them for 4-x dollars per kilogram. what should ms.ortiz charge per kilogram of tomatoes to make on a load of tomatoes?